7938855 has 12 divisors (see below), whose sum is σ = 13760760. Its totient is φ = 4234032.

The previous prime is 7938851. The next prime is 7938857. The reversal of 7938855 is 5588397.

7938855 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7938855 - 2² = 7938851 is a prime.

It is a super-2 number, since 2×7938855² = 126050837422050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 176419 = 7938855 / (7 + 9 + 3 + 8 + 8 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 7938855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7938851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88165 + ... + 88254.

It is an arithmetic number, because the mean of its divisors is an integer number (1146730).

Almost surely, 2^7938855 is an apocalyptic number.

7938855 is a deficient number, since it is larger than the sum of its proper divisors (5821905).

7938855 is a wasteful number, since it uses less digits than its factorization.

7938855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176430 (or 176427 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 7938855 is about 2817.5973807484. The cubic root of 7938855 is about 199.4891546293.

The spelling of 7938855 in words is "seven million, nine hundred thirty-eight thousand, eight hundred fifty-five".